/**

 * Copyright (c) 2025 Huawei Technologies Co., Ltd.

 * This program is free software, you can redistribute it and/or modify it under the terms and conditions of

 * CANN Open Software License Agreement Version 2.0 (the "License").

 * Please refer to the License for details. You may not use this file except in compliance with the License.

 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,

 * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.

 * See LICENSE in the root of the software repository for the full text of the License.

 */



#include <iostream>

#include "utils.h"

#include "acl/acl.h"

using namespace std;



// 耗时较长的核函数，功能为x自增1

extern void LongOP(uint32_t coreDim, void *stream, uint32_t* x);



int main()

{

    int32_t deviceId = 0;

    uint32_t blockDim = 1;

    uint32_t num = 0;

    uint32_t *numDevice = nullptr;

    size_t size = sizeof(uint32_t);

    aclrtContext context;

    aclrtStream stream = nullptr;

    aclrtEvent event;

    aclrtEventRecordedStatus eventStatus;

    aclInit(nullptr);



    // 申请设备

    CHECK_ERROR(aclrtSetDevice(deviceId));

    CHECK_ERROR(aclrtCreateContext(&context, deviceId));

    CHECK_ERROR(aclrtCreateStream(&stream));

    

    // 默认为遇错继续执行，调用该函数设置为遇错即停，当一个任务执行遇到错误，后续任务将不进行。

    CHECK_ERROR(aclrtSetStreamFailureMode(stream, ACL_STOP_ON_FAILURE));

    CHECK_ERROR(aclrtCreateEvent(&event));

    

    // 查询创建后的event状态

    CHECK_ERROR(aclrtQueryEventStatus(event, &eventStatus));

    INFO_LOG("After create event, current event status is %d.", eventStatus);

    

    // 开始做长任务

    CHECK_ERROR(aclrtMalloc((void **)&numDevice, size, ACL_MEM_MALLOC_HUGE_FIRST));

    CHECK_ERROR(aclrtMemcpy(numDevice, size, &num, size, ACL_MEMCPY_HOST_TO_DEVICE));

    INFO_LOG("Applied resource successfully, beging assigning task.");

    INFO_LOG("Begin a long task.");

    LongOP(blockDim, stream, numDevice);

    CHECK_ERROR(aclrtRecordEvent(event, stream));



    // 查询同步后的event状态

    CHECK_ERROR(aclrtQueryEventStatus(event, &eventStatus));

    INFO_LOG("0 is incompleted, 1 is completed.");

    INFO_LOG("After record but before synchronize, current event status is %d.", eventStatus);

    

    // 查询同步后的event状态

    CHECK_ERROR(aclrtSynchronizeEvent(event));

    CHECK_ERROR(aclrtQueryEventStatus(event, &eventStatus));

    INFO_LOG("After synchronize, current event status is %d.", eventStatus);

    CHECK_ERROR(aclrtMemcpy(&num, size, numDevice, size, ACL_MEMCPY_DEVICE_TO_HOST));

    INFO_LOG("The answer is %d.", num);



    // 释放资源

    CHECK_ERROR(aclrtFree(numDevice));

    CHECK_ERROR(aclrtDestroyEvent(event));

    CHECK_ERROR(aclrtDestroyStreamForce(stream));

    CHECK_ERROR(aclrtDestroyContext(context));

    CHECK_ERROR(aclrtResetDeviceForce(deviceId));

    aclFinalize();

    INFO_LOG("Resource cleanup completed.");

}